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Bio


Our Team

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Bio


Our Team

Delta-5 Labs Executive Staff

The staff at Delta-5 Labs are experts in their fields, combining education, advanced certifications, and years of case experience.  The quality of their case work and professionalism has an excellent track records that spans a combined fifty years.  The Delta-5 Labs executive  and associate staff maintain this high level of standard, because every case and each client warrant excellence.     


Zack Kowalske | Forensic Science Advisor | Crime Scene Investigator | Delta-5 Labs

Zack Kowalske currently serves as a police officer and forensic practitioner in the metro Atlanta area. Having served with the Roswell Police Department since 2009, the majority of his career has been spent as a Detective in the Crime Scene Investigations Unit. Mr. Kowalske holds a Bachelor of Science in Investigative Forensics with a Minor in Terrorism and Critical Infrastructure, with graduate level course work completed as well. He is a graduate of the National Forensic Academy, where he was awarded the Dr. William Bass Award for Outstanding Achievement in the Field of Forensic Investigations. First certified as a Crime Scene Investigator by the International Association for Identification in 2007, he is also IAI board certified as a Crime Scene Reconstructionist.

Bloodstain Pattern Analysis and Shooting Incident Reconstruction are the area in which he specializes and has been qualified as an expert witness in Crime Scene Investigations, Crime Scene Reconstruction, Crime Scene Analysis, and Bloodstain Pattern Analysis. An active member of the IAI, ACSR, IABPA, IACSIA, NAFI, and AAFS, he has published both Journal and Magazine articles on Reconstruction and Bloodstain topics. He has served as a member on the North Metro Crime Scene Task Force, FBI Forensic Specialist Working Group Atlanta Office, Roswell Child Abduction Response Team Development Committee, and as the fire investigations liaison for the Roswell Police Department. Mr. Kowalske is an instructor who teaches on crime scene and forensic science related matters, while also conducting case reviews, bloodstain pattern analysis, shooting incident reconstruction, investigation advising, crime scene analysis, and expert testimony for Delta 5 Laboratories.

Zack is an outstanding investigator with great skill in a wide variety of disciplines. He is committed to maintaining the integrity of evidence from scene collection through processing and analysis. His adherence to the scientific process is impressive and I would not hesitate to use him again in the field.
— Dr. Alice Gooding, Forensic Anthropologist

Delta-5 Labs Associate Staff

In addition to our Executive Staff, Delta-5 Forensic Laboratories partners with a team of associate members who bring in-depth experience of major crimes case work in the forensic science and investigations fields. 

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Jennifer Bennett has served as a police officer for 14 years, with more than a decade as a Detective investigating Crimes against children, death and homicide investigations, other felony persons crimes, and cold case homicides. Detective Bennett has more than 2,600 hours of investigative and law enforcement training and obtained a Professional Diploma in Forensic Victimology. She is a leading member in the Roswell Police Child Abduction Response Team development committee, as well as an active member with the Fulton County Child Fatality Review Board. Detective Bennett is decorated by departmental commendations, as well as gubernatorial and congressional letters of recognition for her homicide investigation case work.

Delta 5 Forensic Labs Logo | Crime Scene Consultant | Zack Kowalske | Frederick Zigan

Frederick Zigan is a full time crime scene investigator, polygraph operator and latent fingerprint examiner based out of the metro Atlanta area. He has been a certified peace officer in the State of Georgia for 15 years. He was a part of the Georgia Bureau of Investigation’s Internet Crimes Against Children Task Force for a number of years as well as a Crime’s Against Persons detective where he investigated major crimes from minor assaults to homicides. He is a member of the IAI (International Association for Identification) as well as the APA (American Polygraph Association) and the GPA (Georgia Polygraph Association). Detective Zigan specializes in case reviews, advising and instruction, latent fingerprint analysis/ examination, and polygraph chart and report analysis.

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David Snively is a police Sergeant at a metro-Atlanta police agency where he supervises the Criminal Investigations Division and manages the state-accreditation processes. His previous assignments include 911/Communications, Uniform Patrol, Traffic and DUI Enforcement, Criminal Investigations, and Background Investigations and Recruiting. Mr. Snively is one of twelve Georgia POST certified Master Instructors with nearly 2,000 hours of POST training; a NHTSA DUI Detection and Standardized Field Sobriety Testing Instructor; Field Training Officer; SWAT Tactical Operator, and Advanced Peace Officer.

Mr. Snively is a recipient of the John Marchant, Jr. Leadership award (2011); ASIS International Positive Policing Initiative Award (2016); Kennesaw State University Department of Political Science and International Affairs Outstanding Scholar Award (2017); a Meritorious Service Medal (2018); and five Golden Shield Honors Awards for Excellence in Impaired Driving Enforcement (2011, 2012, 2013, 2014, and 2015). Mr. Snively holds a Master of Public Administration degree from Kennesaw State University (2016) and a Bachelor of Science in Criminology degree from the University of West Georgia (2010). He is currently seeking a Doctorate in Criminology and Criminal Justice at Georgia State University.


Check out some of our team's published work:

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Serving Justice through Science


Serving Justice through Science

 

Serving Justice through Science


Serving Justice through Science